Fig. 7: Population activity as a function of landmark features and appearance.
a Averaged normalized activity of the PPC cells responsive to landmark appearance (N = 52), aligned on the landmark appearance times. The peri-appearance activity is separated by the side of appearance of the landmarks in the field of view. The standard errors are indicated in light color. The population displayed a significant difference in response rate between the two conditions (3-way-ANOVA: F1df = 4.86, p = 0.028). b Same conventions as in (a), for PPC cells responsive to landmark appearance (N = 52), with peri-appearance activity separated by the identity of the appearing landmark. The population displayed a significant difference in response rate between the four conditions (3-way-ANOVA: F3df = 3.22, p = 0.023). c Same conventions as in (a), for HPC cells responsive to landmark appearance (N = 55), with peri-appearance activity separated by the side of appearance of the landmarks in the field of view. There was no significant difference in the population’s response rate when comparing these two conditions (3-way-ANOVA: F1df = 0.015; p = 0.90). d Same conventions as in (a), for HPC cells responsive to landmark appearance (N = 55), with peri-appearance activity separated by the identity of the appearing landmark. There was no significant difference in the population’s response rate when comparing these four conditions (3-way-ANOVA: F3df = 0.70, p = 0.55). e Averaged normalized activity of PPC (N = 52, in red, left Y axis) and HPC (N = 55, in green, left Y axis) responsive cells aligned on the landmark appearance times. The dotted black line represents the rate of saccade starts (right Y axis). The standard errors are indicated in light color. The lines above indicate times for which activity was significantly higher than baseline (PPC: from −218 to −19 ms and from 20 to 322 ms; HPC: from −130 to 265 ms).
